Google’s Android 4.0 Requires Holo Theme For Android Market

Google has announced on their Android developers blog that all Android devices which use Android 4.0 Ice Cream Sandwich and come with the Android Market installed will be required to use the default Holo theme.

In Android 4.0, Holo is different. We’ve made the inclusion of the unmodified Holo theme family a compatibility requirement for devices running Android 4.0 and forward. If the device has Android Market it will have the Holo themes as they were originally designed.

This standardization goes for all of the public Holo widget styles as well. The Widget.Holo styles will be stable from device to device, safe for use as parent styles for incremental customizations within your app.